2001 f350 diesel in antifreeze
polarisxcr
10-10-2007, 02:19 PM
I have a 2001 ford f350 with a 7.3 diesel. The other day fluid was coming out of my overflow. I checked it and it smelled like diesel. I took some fluid out to get the level down and the next day it was over filled again. Is there any way for diesel to get into the antifreeze?
CanukGMC
10-10-2007, 08:35 PM
I have a 2001 ford f350 with a 7.3 diesel. The other day fluid was coming out of my overflow. I checked it and it smelled like diesel. I took some fluid out to get the level down and the next day it was over filled again. Is there any way for diesel to get into the antifreeze?
Are you sure it isn't just old fluid? Antifreeze can get some funky smells\colours to it after thousands of miles without a change. Diesel should seperate to the top just like an oil slick, pour some of this "overflow" into a jar of water and let it sit for a few hours if no oily slick appears on the top seperated (like cooking oil in water) then you're fine. If it does show up then you have a leak somewhere in the engine, most likely a head gasket or something similar where raw fuel is pressurized. If that is the case you should also see antifreeze in the oil (oil will go from black to a milky\chocolate colour) or a white plume of smoke from the exhaust as the antifreeze burns off.
Are you sure it isn't just old fluid? Antifreeze can get some funky smells\colours to it after thousands of miles without a change. Diesel should seperate to the top just like an oil slick, pour some of this "overflow" into a jar of water and let it sit for a few hours if no oily slick appears on the top seperated (like cooking oil in water) then you're fine. If it does show up then you have a leak somewhere in the engine, most likely a head gasket or something similar where raw fuel is pressurized. If that is the case you should also see antifreeze in the oil (oil will go from black to a milky\chocolate colour) or a white plume of smoke from the exhaust as the antifreeze burns off.
rhandwor
10-10-2007, 08:36 PM
Check for antifreeze in the oil you might have a leaking head gasket. A good radiator shop can run a test for you to be sure.
polarisxcr
10-11-2007, 12:01 AM
There is no antifreeze in the oil. Just the antifreeze. Truck still runs good and does not overheat. I am sure fuel is getting into the antifreeze just not sure how.
rhandwor
10-11-2007, 07:24 AM
The antifreeze is in a sealed section of the motor. You have to have a gasket leak somewhere. The diesel is in a sealed system to the injectors. Use a flashlight and look for a loose fitting on top of the engine. A minor intake leak can pull a slight vacuum when cooling down. This would pull in diesel laying on top of the engine.
jas_stang
11-21-2007, 05:34 PM
If it is diesel fuel in your antifreeze, it is most likely a cracked injector cup which means the head has to be pulled.
polarisxcr
12-01-2007, 12:13 AM
You were right. Injector cups needed to be replaced. Cost was 1600 from a diesel repair shop.
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